Theodore pridham



Hurrah g rnrss PATENT OFFICE.

THEODORE PRIDHAM', or rurnssan ngunliu SYDNEY, NEW SOUTH wntus:

CQATENGfORTIMBER, 8&0.

stsncmuoartou forming part a Letters F'atent No. 453,821, dated June 9, 1891.

V Application filed October 13, 1890. Serial lic- 387,96Ba (No specimens.) Fatented in New Sleuth Wales September 27, 1889, No. 1,729; in Victm'is finisher 7, 1889, No. 7,163; in South Australia October 8,1889, 1%. 1,429; in England November 15,1889} No. 18,233, snd in Queenaland i'ehraary 13, 1890, No. 863.

To all wfiom'ifi may concern;

Be it known that l, THEODORE PiuDHAM,

Sydney, in the British colony of New South.

Wales, have invented a new and useful Com position of Matter to be Used as an Improved Preservatives and Water-Proof Coating for Metals, Timber, Masonry, Concrete, 50., (for it: which Letters Patent have been granted in the following British colonies on their respective dates, namely: in New South Wales September 27, 1889, No. 1,729; in Victoria Gotcha-7,1889, No. 7 ,163 in Queensland Febr5 ruary 13, 1890, NO. 863; in South Australia October 8, 1889, No. 1,429, and in Great Britain November 15, 1889, NO. 18,236,) of which the following is a specification. I

This inventionrelates to an improved prezo' servative coating suitable for covering metals, timber, masonry, concrete, brick-work, ships, tanks, pipes, structures of wood or metal, 850., exposed to the actionlof water; the sea, and Ordinary weather, which preservative coating may also be used for'covering all structures of all descriptions for watcrproofingpurposes.

This invention is especially useful in preserving iron,steel, and wood-work structures, than, from oxidation anddecay and of render- ,6 ing water-proof roofing, masonry,brick-work, concrete, &c., and by it the necessity and cost of applying paint and such like at frequent intervals are entirely obviated.

This improved preservative and water 5 proof coating when once applied is considcrably more effective and durable than paint and is dry vor practically dry upon application.

This improved preservative and water- 40 proof coating for metals, timber, masonr concrete, &c., consists, essentially, of amix-,

asutficicntquantity (suchquantitybeingregulated by tests of the mixture and depending upon the temperature of the locality in which it is prepared and to be used, and such quan -titty ranging from five to ten per ccutum in tion, and the prepared coating in thesheets is warmed, if necessary, to prevent cracking, and pressed by direct pressure or by a roller upon such painted surfaces with butt .Or lap joints, as preferred, and will form a substantial coating of which the external surface, will be smooth and dry or practically dry.

I would have it, understood that although 7 I have pointed out the best method -I know. Of preparing the thin sheets fifth-e preserve tive and water-proof coating, yetmany other substances might be added to the composition to be rolled out with more or less bene- 8o ficial results, according to the purpose for which the material is to be used, and 1 would further have it understood thatI do not confine myself to any particular composition,

so long as the nature of' my composition be retained-that is, that mineral bitumen and oil or oily materials be used to form the esscntial part of the coating material.

Having now particularly described and explained the nature of my said inventionnnd 9o iu,what manner the some is to be performed,

I declare that what I claim is- A new article of manufacture consisting of a dry sheet of a pressed or rolled mixture of mineral bitumen and -oil or oily materials, 5 substantially as herein described and explnincd.

THEODORE PRIDIIAM. Witnesses:

Faun WALSH,

F. M. Inst. P. A. Thorns .iAMus WARD. 

